| Active principles | Rating | Bibliogr. | Expand | |
|---|---|---|---|---|
| 1 | Opioid Peptides | 100 | + | |
| 2 | Hypothalamic Hormones | 23 | + | |
| 3 | Tachykinins | 9 | + | |
| 4 | Calcitonin | 6 | + | |
| 5 | Calcitonin Gene-Related Peptide | 6 | + | |
| 6 | Bradykinin | 3 | + | |
| 7 | Galanin | 2 | + | |
| 8 | Cholecystokinin | 2 | + | |
| 9 | Vasopressins | 1 | + | |
| 10 | Melanocyte-Stimulating Hormones | 1 | + | |
| 11 | Neurotensin | 1 | + | |
| 12 | Motilin | 1 | + |